Hey there, i need your advice once again.

More than a month ago i changed all my url paths to be more sef, short and for human easy to read. As a result i had to many duplicated urls and some broken links which i fixed most of them with 301 redirects with the help of google webmaster tools.

Problem is, they are some links that i am not getting notified so i can do the 301 redirect, probably because only 80% of the sitemap has been indexed from google. What i need to do is set higher priority for some article category which has very important articles and bring many visitors.

Can you please explain me how priority system works and how to set up?

Many thanks